The Harmony Clearwater TTD Sprayskirt is a lightweight, rugged, and versatile sprayskirt. It features the innovative, patent-pending, tunnel tie down (TTD) system that allows you to drop the tunnel of your skirt down to the deck in a compact roll for ventilation and improved access to the interior of your boat. It also includes reinforced abrasion wearguards, a mesh deck pocket, adjustable deck stay, and the innovative "easy-Reach" grab loop system. Made of 210 denier nylon fabric coated with polyurethane, this sprayskirt is lightweight and durable and fits conveniently into a provided stuff sack. • Features the tunnel tie down system for ventilation or interior access to your boat • Reinforced abrasion wear guards and mesh deck pocket • Easy-to-reach grab loop system • Lightweight, rugged, and versatile • Adjustable tunnel with drawstring Fits cockpit sizes: 35 x 19" to 39" x 22" Measure Cockpit Size outside of rim to Outside of rim.